This slim, easy-to-pack Sudoku book is perfect for young children. It's sized to easily fit in a backpack. contains 100 easy 4x4 puzzles with two puzzles per page. Answers included at back of book instructions included. Keep youngsters occupied while enhancing their math and logic abilities with these fun puzzles. If they can count to four and understand what the numerals represent, then they can learn how to do Sudoku. Imagine their smiles when they complete puzzles just like the adults. Pick up a copy today. You won't be sorry.